text: import fernet from 'fernet';
  
  export function decrypt(encrypted_mnemonic) {
      const key = new fernet.Secret(process.env.FERNET_KEY);
      var token = new fernet.Token({
          secret: key,
          token: encrypted_mnemonic,
          ttl: 0
      })
      const mnemonic = token.decode();
      return mnemonic;
  }